I hear a knocking sound in the rear left side of the car, only when I accelerate from a dead stop, or when I take a corner at below 20 mph. I don't otherwise hear the sound on a smooth road or over a bump. My car has 188,000. First time I've heard this noise. Never had struts or shocks replaced. Brake inspection was negative. Is this a strut and shock issue?
What is the cause of a knocking sound in the rear left of vehicle? on 1991 Mercedes-Benz 300E
by bm328 in Sacramento, CA on February 23, 2012
2 answers 1 comment
ANSWER by csubak30 on February 23, 2012
Definetly sounds like a shock issue. 188,000 miles and they really need replaced anyway. I would recommend you have both of the rears replaced. Better to replace in pairs.
COMMENT by bm328 on February 23, 2012
Thanks. A leaking shock was the culprit. I replaced the struts and shocks, all around. $900.
ANSWER by Prestige Auto Works on February 23, 2012
An inspection would be necessary to determine the exact cause of your knocking sound. Shocks and struts are recommend to be replaced every 50-80,000 miles. If they have never been replaced, that would be a beneficial repair to start with. There could also be other damaged suspension parts due to the high mileage.